S-wave orifice



FIG. 1 is a perspective view of an S-wave orifice showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view, the left side view being a mirror image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a back view thereof.

The broken lines in the drawings are for illustrative purposes only and do not form a part of the claimed design. 

The ornamental design for an S-wave orifice, as shown and described. 